Typewriter



NOV. 11, 1930. E, H MOYLE 1,781,071

TYPEWRI TER Filed March 50. 1925 Patented Nov. 11, 1930 UNITED STATI-EsA PATENT OFFICE EDWARD H. MOYLE, 0F LOS ANGELS, CALIFORNIA TYPEWRITER Application filed March so, 1925. ,seal No. 19,433.

This invention relates toy imp-rovement in` or push-bars, such as adding machines, call@ culating machines and the'like.

In the normal use of the operating of typewriters and using keys of the standardmanufacture, it is found that the keys not being resilient to the touch or finger tips,"that..they 15 cause fatigue and soreness of fingers and the more or less calousing of same, and it has been tried on various occasions to overcome this by replacement caps and the likeover the operating keys, but these caps soon be- 2.9 come old and soiled andfinally oxidize and harden until they'become loose and drop off. It is an object of my invention to provide a simple and durable key-head, which is soft and pliable to the finger-tips, having armetal re-inforced key-socket or fastening device by which it could be rigidly fastened to the operating type-bar of the typewriter or other machine; and also with separate renewable plate, having designating marksrepresenta- 30 tive of the letterV or figure or mark so indicated, so that it may not be necessary to change the key-head unless so desired.

With these objects in view the further objects or corresponding features of my invention will bebest understood from the following detailed description of prefered and specific forms of device embodying the 1nvention; this description being given not for the purpose of limiting my invention to the standing ofthe invention both in its broad aspect and in its preferred and specific details. Forthe purpose of this specific description, I refer to theaccompanying draw- Y ing, in whichc v Fig. l is a plan view of the keyhea-d when fastened to the vkey-.bar of the machine.

Although I describe my invention specific forms described but for the purpose: of giving a clear and comprehensive nnder- 'i p Fig. 2 is a sectional side-viewof .thekey--' head showingits assembly and when fastened to the key-bar of the machine. p

Fig.` 8 is a sectional endv view of the keyhead also showing its assembly and when fastened 4to keybar of the machine.

Fig. 4 is an end view of the key-head, as, and when fastened vto theV key-bar of the machine. y

Fig. 5 is anend sectional view ofthat Vpart of key-head which 'carries the metal fastening device'by which it is fastened to the key-bar of the machine, and which carries the separable, removable plate having designating letters, figures, or marks thereon. v

A Fig. 6 is'a sectional end View of the metal fasteningv device by which Vthe key-head is fastened to the key-bar of the machine.

Fig. 7 is a plan view of separable re1novable plate (shown with aletter A 'thereon Y vfor clearness vin explanation) which carries y the designating marks.

Fig. 8 is a plan view lookingfrom the bot-l tom of the metal fastening device bywhich the key-head is fastened to the key-bar of the machine.

Fig. 9 is a plan view looking from the top of the metal fastening device by which the key-head is fastened to the machine.

Fig. l0 is an unsectionalized side view of i the metal fastening Ydevice byy which the -key'- head is fastened to the key-bar of the machine.

.Fig 11 is a sectionalized end view'of the key-head showing a modified construction to that as shown in Figs. 1 to 10; it here shows a removable plate, having the characters thereon, which'can be made of rubber,"an d then forced into a seat opening, by a special tool, which wouldV impound the air'underneath, and at the same time,'seal the edges, Q

bycementing, or otherwise, and also-to varrangeA it in a curved position, so that it would actas apneu'matic air cushion, and it, then wouldbe very resilientjto'the finger touch.'

Fig. l2 is another modification of the construction of the key-head, to that as shown. in Figs. 1` to 10, it is'shown as a sectionalized side view, and with the key-headof rubber or any other preferable soft material, but L havingthe characters impressed or inlaid therein. s

Throughoutthe drawing numeral 12 designates the key-bar, Which maybe variable' Without destroying its resiliency.V

The metal connection or fastening cleVQG Y Y 13 is so arranged that it Will be formed'adapti of being squeezedorkey-bar 12A `at 16, Figures 2, 3, y4,11 and 1 2. yIt may' not Vtact-ive means shouldn-b nesssaly- I have ably so that it may be cz z s .t orrigidly forined Yinto the key-'head 14; this metalconnection 13 having a slet @Peeing '15s@ formed that it will key-,bar 12 then dpemnlt :by that' partei its extensies which prei-.acts outside of. the key-head 14 as I have V shown V.be necessary .to press yOrsqueeze onto k*keys-. bar 12, but I have drawn this extensiones ,a proshown this metal connection with ,a diametrilcal top l-A as shown in Figures S and 9,.k

' t-he object being togive the key-head 14 a I awarethat other forms Vcaribe made Without destroying the essence orlntent of my invention- This diametrical topv 16s-A being so formed for sufficient bearing surfacefby which itv may rigidly retain tor hold f ametrical groove 17 as well as the slot epengtheV key-'head .14 'by'the diametrieal vgnoove shown in Figures 2, 3, v5, 11 and 12. V'I-`hedi ing 11e-.Ain the .d til .of key-head 14 .of

1F is.: .55f temefdf by the .metal @mention-0r fastening device 13, When it is cast into the ,saidkey-head.' TheV metal connection or fasl:,tening ,device/'13 is made of such a shape or rform thatit-.WillY a proper connecting I means forthekey-barof any machine. The

instel @ansehen S-can be oframaterial 'S0-v adapted ftli? it ean'be formed with'a corresponding 'slot opening 15 shown in Figures 3,16, .8, and 11, such as steel, aluminum, or,

f Y thelkie, for 'slipping down and Ovlthe ker* har 12 and then'pressedor squeezed to saidV Vany eliitblsmdter to 'thefinger touch taexidzeorb having ley-iheadnl4fwith a metal fastening.

land,`1 -Will be. less liable kyibif 112' their@ l shown at 19inF-ig1ires 2, 3,51, and 12.` d

I-'i'have shown 'a key-heady 1 Inl Figure v`12 herd'. and. .Clrplro .the di 14. be madeY With a convex surface vbut Without the 'sep- Y arable removable plate 20 asI have shown in Figures 2, 3, and 11. The separable removable plate 20, upon Which the letters, iigjures or marks can be deeply indented, or even inlaid or inserted in grooves or slots therein as shodvnin Figures 2 andi, can `:renewed Y Y at. .pleasure when necessary, either-.after becoming old or otherwise, or, this separable renew able plate 20 can be inserted or pushed into'its seat opening 21 by a specialtool or arrangement vvhereby it Will retain a suiicient Y amount of air,.th e space being shown at 23,

1 vhich -tvvillgpenrnitor give it a pneumatic resiliency and cause it to curve or camber over fthe'air contenhand 'dnisoV doi-ng will .be very s seat-opening 21, as, a convenient means fof d means off-astening this renewable plate, such as driving' or :inserti-ng into a diametricalk grooveorslot` provided therefor, .and to a' l greater ,orzlesser depth as bey fou-ndprad* good durable .thrust ,contact toand -Wdth `the f d metal enneton Orl-fastening devis@ :13, butv tica'blenvithout destroying the essence `or infastening, but Iam-aware that there areother tent `,of vmy invention. With-a separable-lor renewable plate or. inset20as I have shown,

and. which will permit of deeply'y indented or inlaid letters, lign-res, or marks,.and by greener ,any other colored rubber .or vother' `material so desired, Withits deeply indent- Aed or inlaid letters, figures, or marks., there-Y now' used.k

` The deeplyiddemed or inlaid needing-1 ures, or marks yfin the separable renewableV plate yor inset 20; Will ygreatly eliminate the* letters, figures, orl marks'ffrom` WearingV olf and still fat the Sametime beeresilienttothe Afingen' touch, as Well' as greatly relieve eyestrain. 1v l l It will Vbe' also seen :that the yremovable inthis"renewable'plate or inset 20 vcould-be of. another colored rubber or other material, mlklngit 'eaSy'tQ'dStHguSh-Y. The: annular or diametrical*groove-17 which I have shovvn in detail ofkeyhead 14. Y

of Fig... 5 and Shownfto accommodate Y'orbe vsuitable for,Y themetal; connection v:or fastening-l device 1 3, and' by which. it' iis" ined around diametrical top 16--Aasshovvn1fin Figs. 8 and 9, When it isca-st or'formed VWithinkey-'head 14, can be so raltered' or changed Withe'ut' destroying the essence orintent" of i.myY invention. rln'fact, thej' rubberL key-'head' 14 can be cast or formed around any suitable form of metal connection or fastening device 13 which may be suitable to connect to the key-bar 12. Or, in fact, the rubber key-head 14 can be cast with any other means by which it can receive the nece-ssary connection.

I have shown in Figs. 2, 3, 8, 9, and 11, as a form of metal connection or fastening device 13 which may be made in one piece,

10 but, I am aware that it may be made in one or more pieces if necessary, and so formed that the key-head 14 when made of rubber, would l have a drawing or elastic holding effect when it is connected or assembled with the key- 15 bar 12.

The very great advantage of the separable or renewable plate or inset is, that the plate itself can be made of one color rubber, and the letters, figures, or marks, 19, when 20 inlaid, can be made of rubber of another color, and then that effective part of keyhead can be renewed very quickly and at little expense.

The resilient or rubber key-head 14 could I be made rounding, concave or flat on its surface. I am aware that modications can be made, as for instance by perforations or a change in shape, such as square or hexagonal with its accompanying parts of a suitable nature, without destroying the essence or intent of my invention.

Having described the preferred forms of the present invention, I do not wish to limit myself to these details of construction, but

wish to reserve to myself any changes, modifications, or variations that may appear to those skilled in the art or fall within the scope of the following claim.

Having described the preferred forms of my invention, I claim:

A resilient keyhead rigidly formed by casting to a slotted fastening means for fastening to a key bar of a key operating machine, means in the resilient keyhead at its operating end for inserting a rubber plate having character marks, said plate arranged so that the air can be impounded underneath.

In testimony whereof I affix my signature.

EDWARD H. MOYLE. 

